How to make a check on the Internet Connection in Android. Call in AsyncTask with WeakReference for avoid memory leaks

CheckInternetConnectAsyncTask.java

public class CheckInternetConnectAsyncTask extends AsyncTask<Void, Void, Boolean> {

    private final WeakReference<Activity> mActivityWeakReference;

    public CheckInternetConnectAsyncTask(Activity activity) {
        mActivityWeakReference = new WeakReference<>(activity);
    }

    @Override
    protected void onPreExecute() {
        super.onPreExecute();

        Activity activity = mActivityWeakReference.get();
        if (activity != null) {
            ProgressBar progressBar = activity.findViewById(R.id.progress_bar);
            progressBar.visibility(View.VISIBLE);
        }
    }

    @Override
    protected Boolean doInBackground(Void... voids) {
        return NetworkUtils.isInternetConnected();
    }

    @Override
    protected void onPostExecute(Boolean isConnected) {
        super.onPostExecute(isConnected);
        Activity activity = mActivityWeakReference.get();
        if (activity != null) {
            if (isConnected) {
                  //handle 
            } else {
                ProgressBar progressBar = activity.findViewById(R.id.progress_bar);
                progressBar.visibility(View.GONE);
              
                CoordinatorLayout parentLayout = activity.findViewById(R.id.coordinator_layout);
                Utils.showSnackbar(parentLayout, activity.getString(R.string.no_internet));
            }
        }
    }
}

MainActivity.java

public class MainActivity extends AppCompatActivity {

    private CheckInternetConnectAsyncTask mCheckInternetConnect;
    
    private Button mCheckInternetConnectButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
      
        mCheckInternetConnectButton = findViewById(R.id.check_internet_btn);
        mCheckInternetConnectButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mCheckInternetConnect = new CheckInternetConnectAsyncTask(MainActivity.this);
                mCheckInternetConnect.execute();
            }
        });
    }
  
    @Override
    protected void onDestroy() {
        super.onDestroy();
        if (mCheckInternetConnect != null) mCheckInternetConnect.cancel(true);
    }

}

NetworkUtils.java

public class NetworkUtils {

    public static boolean isInternetConnected() {
        try {
            Socket sock = new Socket();
            sock.connect(new InetSocketAddress("8.8.8.8", 53), 1500);
            sock.close();
            return true;
        } catch (IOException e) {
            return false;
        }
    }
}